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A bathtub faucet diverter repair kit is the set of small parts that restores the function of your tub spout diverter when it starts leaking from the spout, won’t fully switch over to the shower, or drips after you’ve turned the water off. Most kits bundle diverter valve stems, cup seals and diverter gates, which are the parts that wear out first. Because these components are inexpensive and easy to swap, a repair kit is usually a better first step than replacing the entire tub spout. The six options below were selected by comparing listed specifications, brand and fit information, and the patterns owners commonly describe in reviews. None of these were physically tested by our team.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| Enhon 2 Set Tub Spout Diverter Repair Kit (Chrome, Classic) | Homeowners who want two complete sets on hand | Two sets of stems, cup seals and gates |
| Moen 3800 Tub Spout Diverter Repair Kit (4 Pcs 101237) | Owners of Moen 3800-style tub spouts | Model-specific cup seal and diverter gate |
| Universal 2 Set Tub Spout Diverter Repair Kit (Classic, Chrome) | General-purpose replacement with a chrome finish | Universal fit across common spout styles |
| Universal 2 Set Tub Spout Diverter Repair Kit (Classic Style) | Budget-conscious repairs with a standard setup | Two stems, two seals and two gates |
| Tub Diverter Repair Kit (3 Pcs 101237, Moen 3800) | Simple single-diverter repairs on Moen-type spouts | Compact three-piece set |
| Shower Diverter Repair Kit (2pcs Tub Spout) | Quick repairs where a two-piece kit is enough | Two valve stems, two seals and two gates |
Enhon 2 Set Tub Spout Diverter Repair Kit (Chrome, Classic)
Includes 2 x Diverter Valve Stems, 2 x Cup Seals and 2 x Gates, Bathroom Shower Bathtub Leaky Faucet Repair Replacement Parts Enhon 2 Set Tub Spout Diverter Repair Kit (Chrome, Classic)
This kit suits people who want a spare set on hand or who expect to repair more than one tub spout over time. It is a good match for a standard chrome classic-style tub spout where the diverter has begun leaking at the spout.
Key specs
- Two sets, each with a diverter valve stem, cup seal and diverter gate
- Chrome, classic style
- Bathroom shower and tub replacement parts
Pros
- Two complete sets give you a spare for future repairs.
- Covers all three wear points in one purchase.
- The chrome finish is designed to blend with most tub hardware.
Cons
- Fit depends on matching your existing spout style, so measure or compare first.
- Owners sometimes report that the included seals need careful seating during installation.
Diverter Valve Repair Kit, Plastic & Rubber, 4 Pcs 101237 for Moen 3800 Tub Spout
Diverter Valve Repair Kit, Plastic & Rubber, Bathroom, Sink Faucet Parts, Plumbing Fixture, Shower Repair Replacement Parts 4 Pcs 101237 Cup Seal & Diverter Gate for Moen 3800 Tub Spout
This option is aimed at owners who know their tub spout is a Moen 3800-style unit and want a part number match. The listing references the 101237 cup seal and diverter gate, which is the specific fit most useful for that spout family.
Key specs
- Four pieces, including the 101237 cup seal and diverter gate
- Plastic and rubber construction
- Designed for Moen 3800 tub spouts
Pros
- Model-specific part numbers reduce guesswork on fit.
- Four pieces give a bit more room for a second attempt.
- Plastic and rubber parts are the standard materials for diverter seals.
Cons
- Not appropriate for non-Moen 3800 spouts.
- Rubber components can harden over time, so replace them as a set rather than piece by piece.
2 Set Universal Tub Spout Diverter Repair Kit Parts (Classic, Chrome)
2 Set Universal Tub Spout Diverter Repair Kit Parts, Includes 2 x Diverter Valve Stems, 2 x Cup Seals and 2 x Gates, Bathroom Shower Bathtub Leaky Faucet Repair Replacement Parts (Classic,Chrome)
This kit is marketed as universal, so it is a reasonable choice when you have not identified your spout brand. It works well for a homeowner who wants a general-purpose replacement with a chrome classic look.
Key specs
- Two sets of valve stems, cup seals and gates
- Chrome, classic style
- Labeled as universal bathroom shower and bathtub replacement
Pros
- Universal labeling broadens the range of spouts it may fit.
- Two complete sets provide a spare.
- Chrome finish matches many common tub fixtures.
Cons
- “Universal” does not guarantee fit on every spout, so confirm the stem dimensions.
- Installation instructions are typically minimal, so take photos before you disassemble.
2 Set Tub Spout Diverter Repair Kit (Chrome, Classic Style)
2 Set Tub Spout Diverter Repair Kit – Universal Bathroom Shower Bathtub Leaky Faucet Replacement Parts, Includes 2 Diverter Valve Stems, 2 Cup Seals and 2 Gates (Chrome, Classic Style)
This is another two-set universal kit, suited to a repair where the goal is simply to replace worn internal parts at a reasonable level of effort. It is a sensible pick for a standard chrome tub spout with a classic profile.
Key specs
- Two diverter valve stems, two cup seals and two gates
- Chrome, classic style
- Universal bathroom shower and bathtub replacement parts
Pros
- Includes all three replaceable components in matched pairs.
- Chrome finish suits most classic tub hardware.
- Good option for a single-spout household repair.
Cons
- Universal fit claims require checking the stem and gate size against your spout.
- Owners often report that the gates can be stiff at first, so lubricate lightly.
Tub Diverter Repair Kit, Plastic & Rubber, 3 Pcs 101237 for Moen 3800 Tub Spout
Tub Diverter Repair Kit, Plastic & Rubber, Bathroom, Sink Faucet Parts, Plumbing Fixture, Shower Repair Replacement Parts 3 Pcs 101237 Cup Seal & Diverter Gate for Moen 3800 Tub Spout
This three-piece kit is a compact version of the Moen 3800-matched set. It fits owners who have confirmed their spout is a Moen 3800 style and need only the core replacement parts.
Key specs
- Three pieces, including the 101237 cup seal and diverter gate
- Plastic and rubber construction
- Designed for Moen 3800 tub spouts
Pros
- Specific part number reduces the chance of a wrong-fit purchase.
- Smaller set is simple to store as a spare.
- Materials match standard diverter seal design.
Cons
- Only useful for Moen 3800-style spouts.
- Three pieces means you may need to source a separate stem if the original is damaged.
Shower Diverter Repair Kit, Leaky Bathtub Faucet Replacement Parts (2pcs)
Shower Diverter Repair Kit, Leaky Bathtub Faucet Replacement Parts, Bathtub Spout for Fixing 2pcs Tub Spout Diverter Repair Kit, 2 Valve Stems, 2 Seals & Diverter Gates
This kit is a straightforward two-set option for repairing a leaky tub spout diverter. It suits a homeowner who wants a compact, general-purpose kit and is comfortable confirming fit before installing.
Key specs
- Two tub spout diverter repair sets
- Includes two valve stems, two seals and two diverter gates
- Intended for leaky bathtub faucet repair
Pros
- Paired components cover the common failure points.
- Straightforward contents make it easy to know what you have.
- Useful for a quick repair without extra parts.
Cons
- Fit information is limited, so verify the spout type before ordering.
- No spare set is included beyond the two sets listed.
Buying Guide
Choosing a bathtub faucet diverter repair kit is mostly a question of fit. The diverter is the valve inside the tub spout that directs water up to the showerhead, and its internal stem, seal and gate must match the dimensions of your specific spout. A kit that fits the wrong brand or generation can leak no matter how carefully you install it.
Selection criteria
Start by identifying your tub spout. Look for a brand name or model number on the spout body or under the escutcheon plate. Moen, Delta and other brands use different stem and gate designs, so a part number such as 101237 is valuable when it is listed.
Important features
- Valve stem: The stem moves the gate and must match the spout’s internal bore.
- Cup seal: The seal stops water from bypassing the diverter. Rubber seals wear and harden over time.
- Diverter gate: The gate is the piece that actually redirects flow. Worn gates often cause water to leak from the spout while the shower is running.
- Finish: Chrome and classic finishes are the most common. Match the finish visually so the exposed parts blend in.
Specs to check
- Brand and model compatibility, including any listed part numbers
- Number of pieces and whether sets are paired
- Material (plastic and rubber are standard for diverter seals)
- Whether the listing says “universal” and what that claim covers
Choosing by need
- Known Moen 3800-style spout: Choose a kit with the 101237 part number.
- Unknown brand, standard chrome spout: A two-set universal kit is a reasonable starting point.
- Want a spare on hand: A two-set kit lets you keep a complete backup.
- Simple, single-spout repair: A compact kit with fewer pieces is often enough.
Things to watch out for
- Do not assume “universal” means every spout. Compare stem length and gate size with the old parts.
- Shut off the water supply or the main valve before removing the spout, and cover the drain to avoid losing small parts.
- If the spout itself is cracked, corroded or leaks from the threads, a repair kit will not solve the problem.
- If your plumbing is older or you are unsure how the valve connects to the supply lines, consult a licensed plumber.
For more background, see Delta Faucet Repair Kits: How to Choose and Use the Right One and 9 Best Delta Bathtub Faucet Repair Kits for Common Leaks and Drips. If your repair involves a lever handle rather than the spout, Bathroom Moen Faucet Repair: Lever Handle Kit Review (2026) covers that situation.
FAQ
How do I know if my tub diverter needs a repair kit?
The most common signs are water coming out of the spout while the shower is running, or a weak shower flow because the diverter is not fully sealing. If the spout drips after you turn the water off, the cup seal or gate is often the cause.
Can I use a universal kit on any tub spout?
Not always. “Universal” kits are designed to fit a range of common spouts, but stem length and gate size still vary. Compare the old parts with the kit before installing, and check the brand of your spout.
Do I need to replace all the parts in the kit?
Most people replace the stem, seal and gate together because they wear at similar rates and are inexpensive to swap. Replacing only one part often leaves the others close to failure.
Do I need to turn off the water before repairing the diverter?
Yes. Shut off the water supply or the main valve, and open a tub or shower faucet to relieve pressure. This prevents water from spraying when you remove the spout.
How long does a diverter repair usually take?
Many repairs are completed in under an hour once the water is off and the spout is removed. Setting aside time to photograph the parts first can make reassembly easier.
When should I call a plumber instead?
Call a licensed plumber if the spout is damaged, the threads are corroded, the leak is coming from inside the wall, or the valve does not respond after replacing the parts. Those problems usually require more than a kit.
Are the parts in these kits interchangeable with OEM parts?
Some kits are designed as direct replacements for specific OEM part numbers, while others are universal. Check the listed part numbers against your original parts, and consult the manufacturer if you need an exact OEM match.
Conclusion
A bathtub faucet diverter repair kit is one of the most cost-effective fixes for a leaking or stuck tub spout, but only if it matches your spout. If you know you have a Moen 3800-style spout, the part-number-specific kits are the most reliable choice. If your spout brand is unknown, a two-set universal kit with a chrome finish is a reasonable starting point, provided you confirm the stem and gate dimensions first. Choose a two-set kit if you want a spare, and a compact set if you only need to replace worn parts once. Always shut off the water, photograph the parts before removing them, and call a licensed plumber if the spout itself is damaged.
